"Nobody gets to be surprised by that, because it is entirely plausible that the hill our president is willing to die on is the one formed by Bill O'Reilly's workplace erection poking up against his old-man slacks," Oliver said on Sunday's episode of HBO's "Last Week Tonight."

Fans of the show will remember that Oliver previously hatched a unique plan to "educate" Trump in February. He bought advertising time to run commercials on several cable-news channels. Noting POTUS' apparent addiction to watching and commenting on cable-news stories, Oliver was sure Trump would see them. Well, the host is doing it again.

"We have produced an ad to educate Donald Trump, to air during 'The O'Reilly Factor' in New York and D.C.," Oliver said. "We submitted it to stations on Friday. But weirdly, we haven't heard back from them since, which is a little surprising because we are one of the only advertisers willing to buy time on his show at the moment."

Fearing that the stations will reject the commercial, Oliver gave his viewers a sneak peek at the ad. Like before, it features the "Catheter Cowboy," who starts speaking about catheter tips before slipping in an educational message for the president.

This time, the cowboy tells the president he's doing damage to victims of sexual harassment when he defends someone who's being accused of offenses toward women, such as O'Reilly.